Philips MASTER SON-T PIA Plus lamp is a clear tubular high-pressure sodium lamp with PIA (Philips Integrated Antenna) technology. The PIA technology guarantees optimum operational reliability and reliable (less than 30 seconds) re-ignition. New, more robust construction with fewer weld points for better vibration and shock resistance, fewer initial failures and longer lamp life. The outside is a hard glass outer bulb. Is characterized by its good lumen / watt ratio and long life. Very high reliability of 0% failure in the first 6000 hours. Universal Burning Position.
Application . This MASTER SON-T PIA Plus is used for public lighting, sports facilities, horticulture, parking lots and the illumination of buildings and objects and other general public places where safety plays a role. Often in surface-mounted fixtures and lampposts. The SON T PIA Plus lamps with E40 lamp base are used with a conventional ballast with or without an igniter. Suitable for use in enclosed luminaires.
Lifetime of the MASTER SON-T PIA Plus. Failure of 5% at 8,000 hours and 50% failure at 24,000 hours on electronic ballast. The light output at 25 ° C can reach 150 Lumen / watt, which is quite high.
Available in lamp color display 2000K (yellow / orange) and in wattages 50W, 70W, 150W, 250W, 400W and 600W with an E40 fitting. The color fastness (Ra) is 25 max. 
